90540532 has 12 divisors (see below), whose sum is σ = 158724580. Its totient is φ = 45190656.

The previous prime is 90540481. The next prime is 90540547. The reversal of 90540532 is 23504509.

It can be written as a sum of positive squares in 2 ways, for example, as 90136036 + 404496 = 9494^2 + 636^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90540532.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17307 + ... + 21922.

Almost surely, 2^90540532 is an apocalyptic number.

It is an amenable number.

90540532 is a deficient number, since it is larger than the sum of its proper divisors (68184048).

90540532 is a wasteful number, since it uses less digits than its factorization.

90540532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39810 (or 39808 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 90540532 is about 9515.2788713731. The cubic root of 90540532 is about 449.0358484811.

The spelling of 90540532 in words is "ninety million, five hundred forty thousand, five hundred thirty-two".